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May 28, 2023
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May 28, 2023
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Introduction Recently self-sustaining, diversified, low-input, and energy-efficient agricultural systems like intercropping have been considered as the efficient way to achieve the sustainability in agriculture. Intercropping as an old agricultural practice, have been followed especially at the small scale and subsistence farming. It can be defined as the agricultural practice of growing two or more crops or ecotypes together in the same field. Intercropping brings diversity of species in the...
Topics: Bean ecotypes, Crop growth rate, Dry matter accomulation, Leaf area index
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May 24, 2023
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May 24, 2023
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Introduction Savory plant ( Satureja bachtiarica ) belonging to the Lamiaceae family and the genus Satureja is considered as a valuable medicinal plant. Flowering branches are widely used in food and pharmaceutical industries. This plant is native of Iran and grows well in the western, southwestern and central regions of Iran. Cultivation of permanent medicinal plants adapted to the dryland farming conditions of each region can be the best option for alternative annual cereal cultivation....
Topics: Ambrothermic diagram, Canopy area, Cattle manure, Dry weight, Percentage of dry weight
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May 24, 2023
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May 24, 2023
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Introduction Rice-duck cultivation is an integrated farming technology, which could increase rice production, grain quality and ecological sustainability in paddy fields. One of the main strategies in sustainable agriculture is the use of optimal cultivation systems in agricultural systems which could be increased the range of adaptation of rice to flooding depth and degree of moisture control. Rice-duck cultivation could be affective to weed control as well as reducing environmental pollution...
Topics: Hashemi cultivar, Rice-Duck, SRI cultivation system, Weeding
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May 24, 2023
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May 24, 2023
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Introduction Growing degree days (GDD) and helio thermal units (HTU) are the temperature based agro-meteorological indices that play important role in predicting crop growth and yield. Growing degree days is based on the concept that the actual time to achieve a phenological stage is linearly related to base temperature (T b ) and optimum temperature. The efficiency of conversion of heat and radiation energy to dry matter depends on genetics factors and planting date. Heat summation units...
Topics: Growth degree days, Helio thermal units, Sprout development, Tuber bulking, Yield
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May 24, 2023
05/23
May 24, 2023
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Introduction Purslane ( Portulaca oleracea L.) is an annual and C4 plant belonging to the family portulacaceae. The plant is drought- and salt-tolerant which contains high amounts of beneficial omega-3 fatty acids and antioxidant vitamins. Nitrogen is the key element in soil fertility and crop production. Attention to the soil quality and health has increased in recent years, especially for sustainable production of medicinal crops. So that, for production of healthy food in industrialized...
Topics: Biosulfur, Cow manure, Mycorrhiza, Nitroxin, Vermicompost
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May 24, 2023
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May 24, 2023
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Introduction Wheat is the most important crop in the world, which has always been of particular importance since its domestication and has the highest cultivated area among crops. Wheat is the main food of most people in many parts of the world. Among the factors that reduce wheat production, weeds are of particular importance and according to the studies; the average weed damage in wheat fields is 23%. Mixed cropping systems based on carefully designed species mixtures reveal many potential...
Topics: Carotenoid, Chlorophyll a, Peroxidase, Setareh cultivar, Weed biomass
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May 24, 2023
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May 24, 2023
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Introduction Soil bacteria plays an important role in bio-geochemical cycles that cause soil ecosystem dynamics to return nutrients to life cycles. In recent days, these organisms can serve as complementary or, in some cases, alternative fertilizers, to maintain the sustainability of the agricultural ecosystem. On the other hand, the production of high-yielding cultivars has increased the consumption of agricultural inputs, especially fertilizers, which has caused a crisis of environmental...
Topics: Biomass, Biophosphour, Leaf node, Nitroxin, Seed yield
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May 24, 2023
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May 24, 2023
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Introduction The black seed is scientifically known as Nigella sativa L. from the family Ranunculaceae, which is susceptible to deficiencies in micro elements, including iron and poor soils. The concentration of Fe and Zn in soil solution is usually very low and is mostly mixed with organic matter. The solubility of Zn and Fe is strongly dependent on soil acidity. Managing nutrient intake can improve plant growth and product quality. Inappropriate nutrient management in today's common practice...
Topics: Micro element, Medicinal Plant, Nano chelate, Yield components
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May 24, 2023
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May 24, 2023
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Introduction Intercropping is an old agricultural practice which is growing of multiple crop species at the same time in the same place. Traditionally, intercropping has been used to increase crop production and the efficiency of the resource as well mitigate any possible risk. Intercropping has been shown to decrease the risk of crop failure by increasing the crop yield stability over time. Intercropping creates biodiversity in the cropping systems, and it is considered to make the systems...
Topics: Land equivalent ratio, Replacement series, Resource use efficiency, Seed yield
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May 23, 2023
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May 23, 2023
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Introduction: Phosphorus is the third most important nutrient in crop production after nitrogen and potassium. It is involved in all biochemical processes, energetic compounds, and energy transfer mechanisms. Phosphorus participates in the cellular proteins and cell membrane and nucleic acids. In addition, this element is essential for seed formation and root development. Also, this element recovery in the first year of application estimates to be 8 to 30%, and after 30 years rarely reaches to...
Topics: Benefit to cost ratio, Phosphorus use efficiency, Safflower, Yield components
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May 23, 2023
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May 23, 2023
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Introduction Quinoa ( Chenopodium quinoa Wild) is native to the Andean region of South America. Various genotypes of quinoa have a high diversity regarding different traits such as sensitivity to daylength, seed size and color, nutritional and anti - nutritional value of seeds, tolerance to biological and non - nutritional stresses. Considering the development goals of the quinoa, the need for new genotypes is very tangible. Fortunately, new genotypes of quinoa have become available that have...
Topics: Saponin, Seed yield, Spring planting
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May 23, 2023
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May 23, 2023
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Introduction Intercropping system is the growth of two or more crops at the same time, which can lead to decreases in the risk of total crop reduction and increases in yield with control of weeds. Quinoa ( Chenopodium quinoa willd.) is a pseudo cereal with high nutritional value which is approximately a new crop in Iran. So, this research was conducted to assess the effects of additive intercropping of quinoa andpotato ( Solanum tubersum L.), and the methods of weeds control on yield and yield...
Topics: Manual weeding, Multiple-cropping system, Paraquat, Sole cropping, Weeds density
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May 23, 2023
05/23
May 23, 2023
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Introduction In the dry climate of southern Iran including Fars province, most precipitation occurs in winter, thus winter cereals such as triticale ( Triticosecale Wittmack) experience water shortage at booting, flowering and grain filling stages in spring. The booting, flowering and grain filling periods are the most sensitive stages to water deficit. Nitrogen fertilizer application is a farmer’s common practice to increase yield, but its performance depends mainly on soil water status than...
Topics: Biomass yield, Chlorophyll, Harvest index, Mean kernel weight
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May 23, 2023
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May 23, 2023
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Introduction Sesame is one of the oldest crops. Ethiopia is commonly accepted as the origin of domestic sesame. Sesame is a diploid (2n = 26) plant that grows as a bush. Sesame has a special place among oil plants due to its high oil content and quality as well as its high oil durability. Drought stress is a condition that cells and tissues are in a state where their inflammation is incomplete. In other words, dehydration occurs when the amount of transpiration exceeds the amount of water...
Topics: Sesame, Tolerant cultivars, Water requirement, Yield
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May 23, 2023
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May 23, 2023
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Introduction Nowadays, food production systems need to be explored for supplying the needs of the world's growing population, as well as sustainable production in the face of global climate change. In this regard, Cereal's yield has played a significant role in supporting global food security. The unceasing growth in demand for water in the industrial sector, drinking water, and reduction in the amount of water available for the agricultural sector has led to a reduction of water usage in rice,...
Topics: AquaCrop model, Irrigation, ORYZA2000 model, Planting date
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May 23, 2023
05/23
May 23, 2023
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Introduction : Roselle ( Hibiscus sabdariffa L.) as a member of Malvaceae family is a subtropical medicinal plant. This plant is self-pollinated and sensitive to cold. Bolls of Roselle are used in food and pharmaceutical industries. One of the most important purpose to achieve high quality and quantity yield is evaluation of nutritional systems and irrigation management for plants. The use of chemicals in the production of medicinal plants in addition to environmental pollution, decreases the...
Topics: Boll yield, Cow manure, Harvest index, Irrigation
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May 21, 2023
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May 21, 2023
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Introduction Water limitation can damage pigments and plastids, reduce chlorophyll a, chlorophyll b, rate and grain filling period. One approach to improve the water stress problem is the use of plant growth promoting rhizobacteria (PGPR) and Mycorrhiza . The PGPR are a group of rhizosphere colonizing bacteria that produces substances to increase the growth of plants, synthesize different phytohormones, including auxin, cytokinin, and gibberellin, synthesize enzymes that can modulate plant...
Topics: Drought, Mosseae fungi, Nanoparticles, PGPR, Photosynthetic pigments
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May 21, 2023
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May 21, 2023
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Introduction: Rice ( Oryza sativa L.) is one of the three major food crops worldwide. Approximately 50% of the world’s population uses rice as a staple food. Silica and zinc among nutrients play a key role in improving plant nutrition and increasing rice growth, so that a lack of these elements reduces growth and consequently reduces yield. Also fortifying rice with silicon and zinc can correct deficiencies of these elements in humans who consume rice. Materials and Methods: This experiment...
Topics: Grain silica, Grain yield, Grain zinc, Nanofertilizer
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May 21, 2023
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May 21, 2023
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Introduction Potato ( Solanum tuberosum L.) as a drought sensitive crop is one of the main sources of human nutrition in different countries and it is cultivated almost all over the world. It is predicted that among the 25 studied countries, the decline in potato yield in Iran between 2040 and 2069 will be 13.3% for drought-adapted cultivars and 48.3% for non-drought-adapted cultivars. Annually 164.4 thousand hectares of agricultural lands in Iran are allocated to potato cultivation with a...
Topics: Stress tolerance index, Water use efficiency, Yield loss
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May 21, 2023
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May 21, 2023
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Introduction: Increasing population growth along with the lack of freshwater resources have necessitated the use of unconventional water resources in agriculture, as the largest fresh water consumer, especially in the arid and semiarid areas. Application of suitable irrigation management with saline water can reduce the yield loss caused by salinity. Saline farming is based on the cultivation of crops and plant varieties that can tolerate high levels of salinity. Quinoa ( Chenopodium quinoa...
Topics: 1000 kernel weight, Alternate moderate, Grain yield, Partial root-zone salinity-stress, Physical...
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May 21, 2023
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May 21, 2023
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Introduction Iran with mean annual precipitation of 240 mm is considered located in arid zones of the world. Water deficit reduces plant growth and development by affecting various physiological and biochemical processes. Methanol foliar application is a method which increases crop CO 2 fixation in unit area. Recent investigation showed that C 3 crops yield, and growth increased via methanol spray and methanol may act as C source for these crops. Generally, the major role of this substance is...
Topics: Aken number, Organic and chemical improvers, Water deficit stress, Water use efficiency
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May 21, 2023
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May 21, 2023
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Introduction: Purslane ( Portulaca oleracea L.) is an annual and C4 plant that belongs to the family of Portulacaceae that is tolerant to drought and salt stresses which contains high amounts of beneficial omega-3 fatty acids and antioxidant vitamins. Adaptation to both dry and saline conditions makes Purslane a prime candidate as a vegetable in areas with dry conditions and salty soils, often present together where land is irrigated. Purslane seeds provide nutritional value and have beneficial...
Topics: Biosulfur, Mycorrhiza, Nitroxin, Purslane, Vermicompost
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May 21, 2023
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May 21, 2023
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Introduction : In Iran, clover is the second most important forage crop after alfalfa ( Medicago sativa ) and is cultivated on a surface of about 70,000 hectares. Yield improvement of this plant could be achieved through autumn cultivation. Iran is still one of the main centers for the diversity of clover species, there is not much information about freezing tolerance of native species of this important plant. Since freezing stress is one of the most important winter stresses which causes...
Topics: Acclimation, Leaf area, Planting date, Recovery period, Survival
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May 20, 2023
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May 20, 2023
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Introduction Investigating the effect of climate change on agricultural production in spatio-temporal dimension, development and use of crop management decision-support tools, supporting and target agronomic research and policy require a series of accurate and standard meteorological data. The weather station databases are often regional in coverage, and it can have extensive gaps in station coverage over time. It may also contain errors in climate records, station coordinates or elevation....
Topics: Agricultural meteorology, Spatio-temporal changes, Stations data, Validation
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May 20, 2023
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May 20, 2023
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Introduction The optimum resource level in agro-ecosystems should be determined to decrease production costs, conserve resources, and mitigate environmental pollutions. Optimization is an effective and sustainable management approach to conserve resources and decline environmental pollutions. Response surface methodology (RSM) is defined as a collection of mathematical and statistical techniques used to develop, improve, or optimize a product. RSM is a statistical technique for optimization...
Topics: Central Composite Design, Economic- environmental scenario, Lack of fit, New crop, Sustainable...
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May 20, 2023
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May 20, 2023
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Introduction Common bean ( Phaseolus vulgaris L.) is a food crop with high protein, fiber, and minerals. One of the important issues in the formation of seed yield is how photosynthetic materials are allocated in plants. This may be especially important when the plant is experiencing drought stress. Brassinosteroids are a group of steroid hormones that have been implicated in a wide range of physiological processes. Brassinosteroids increase crop yield by altering plant metabolism and...
Topics: Drought stress, Malondialdehyde, Proline, Relative water conten, Seed yieldt
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May 20, 2023
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May 20, 2023
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Introduction Drought is the most severe abiotic stress factor limiting plant growth and crop production. Many physiological processes in plants are impaired by drought stress. Also, this stress can damage the photosynthesis of plants, pigments and plastids reduce chlorophyll a, chlorophyll band other carotenoids, hydrolyze proteins and prevalent photochemical reactions in most plants. The response of plants to drought stress depends on several factors such as developmental stage, severity,...
Topics: Bio fertilizers, Grain filling rate, Mycorrhiza, Water limitation
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May 20, 2023
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May 20, 2023
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Introduction Sugar beet, scientifically known as Beta vulgaris L, is allogamous, diploid, biennial plant of the spinach genus that is cultivated to produce storage roots. The growth period of sugar beet, depending on environmental conditions and genotype, varies from 5 to 9 months and is known as a late maturing plant. Therefore, estimating the yield reduction due to leaf fall plays an important role in farm management. In addition to the effects of stressors, some farmers may use sugar beet...
Topics: Leaf damage, Growth stage, Percentage of sugar, Root yield
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May 20, 2023
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May 20, 2023
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Introduction Mycorrhiza fungus is of special importance in organic agriculture and in relation to the coexistence of all root characteristics of the host plant is affected and also improves the water relationship in the host plant. With application of mycorrhizal fungus, the plant absorbs soil water better and as a result, by increasing the relative moisture content of the leaves, the stomata are open for a longer time and carbon dioxide processing is done optimally, resulting in more...
Topics: Antioxidant enzymes, Chlorophyll, Drought stress, Mycorrhiza
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May 20, 2023
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May 20, 2023
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Introduction: Many experiments have shown that Silicon (Si) can reduce the effect of both biotic and abiotic stresses in plants caused by plant diseases, pest damage, salinity, drought, heavy metal toxicity, nutrient imbalance, water logging, high radiation, high temperature, wounding, and freezing. It has been indicated that silicon has a beneficial role in plant nutrition such as enhancement in absorbing nitrogen, phosphor, potassium and zinc. Beneficial results of silicon application on...
Topics: Bentonite, Mintubers, Nanoclay, Nanosilica, Silicon
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May 20, 2023
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May 20, 2023
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Introduction Sustainable agriculture is necessary to tackling environment pollutions whilst protecting food security and reducing dependence to fossil fuels. Conservative agriculture is a sustainable system for crop production which improves crops production. No-till system is one of the methods of Conservative agriculture which decreases greenhouse gas emissions and soil erosion. Mulching is also one of the other methods of conservation agriculture which covers the soil surface with varied...
Topics: Chemical fertilizer, Conservation agriculture, Grain protein yield, Legumes
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May 20, 2023
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May 20, 2023
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Introduction : Rice ( Oryza sativa L.) is one of the most important staple food crops in the world. However, rapid increase in world population and adverse effects of climate change, such as prolonged drought, has resulted in challenges in food security. One of the important factors in reducing rice yield can be the emergence and poor establishment of seedlings in the field. Seed treatment before sowing is the foundation for activation of seed resources that in combination with external...
Topics: Emergence percentage, Grain yield, Harvest index, Panicle length, Plant height
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May 20, 2023
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May 20, 2023
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Introduction The high nutritional value of quinoa and its ability to grow under adverse environmental conditions have led to an increase in the area under cultivation globally. Quinoa has attracted particular attention in recent years due to its ability to grow under adverse environmental conditions and its high nutritional value. Water scarcity stress is one of the non-bioenvironmental stresses that has destructive effects on crops' development and yield. Morphological, physiological, and...
Topics: Catalase, Drought stress, Glycine betaine, Peroxidase, Proline
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May 20, 2023
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May 20, 2023
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Introduction One of the important factors in the adaptation of plants to new environmental conditions is the appropriate response of development stages to temperature and photoperiod regimes. The thermal time, growing degree days (GDD) or heat unit concept is commonly the basis for modeling phenological development in crop models for different common crops and under-utilized crops. The GDD concept describes crop development as a function of temperature accumulation above the base temperature...
Topics: Day length, Growing degree day, Mid-maturity, Sowing date, Thermal time
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May 20, 2023
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May 20, 2023
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Introduction Environmental condition and appropriate planting date are the most important factors in producing optimal yield. Different planting dates lead to adaptation of plant vegetative growth period to different temperatures, daytime, and solar radiation. Therefore, it affects the development, production of biomass and ultimately plant yield. The effect of environmental factors on phenological stages of the plant makes the planting date differ from region to region and between genotypes in...
Topics: Chlorophyll, Essential oil, Nitrogen, Relative water content
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May 20, 2023
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May 20, 2023
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Introduction Proper planting date and irrigation rate are the most important factors for better use of rainfall and soil moisture and thus increase crop yield. Production of medicinal and aromatic plants and the demand for natural products in the world is increasing, so that the twentieth century has been named as a return to nature and the century of using herbal medicines. Proper growth and development of medicinal plants in agricultural conditions requires knowledge of the ecological...
Topics: Biological yield, Crop growth rate, Harvest index, Number of spikes per plant, Water requirement
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May 20, 2023
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May 20, 2023
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Introduction: Drought is undoubtedly one of the most important environmental stresses limiting the productivity of crop plants around the world. An optimal partitioning of dry matter between root and shoot, therefore is of crucial importance for crop yield under drought stress. Deficit irrigation strategy and planting crops with low water requirements and low expectations, for example, Kochia is very important under drought stress. Kochia is a salt- and drought-tolerant species that can be...
Topics: Deficit irrigation, Halophyte, Potted study, Root morphology
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May 17, 2023
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May 17, 2023
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Introduction One approach for medicinal plants cultivation expansion is to sow them in rainfed areas. In recent years, the study of valuable types of medicinal plants, development of cultivation and meeting the needs of the pharmaceutical industry has been one of the goals of scientific and research centers. Savory is a valuable medicinal species in the world. The aerial parts and volatile constituents of Satureja species are commonly used as a medicinal herb and flavoring agents. They can be...
Topics: Cow manure, Medicinal plants, Savory, Straw
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May 17, 2023
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May 17, 2023
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Introduction Wheat is the most important staple food crop in the world as well as in Iran. About 63% of the wheat cultivation areas and 40% of its production is under dryland conditions in Iran. Water and nitrogen are the two most important limiting factors for wheat production in dryland conditions. However, the role of water is about 2.3 to 3.9 times the nitrogen because the water deficiency limits the absorption of the nutrients especially nitrogen. Nitrogen deficiency is very critical than...
Topics: Nitrogen use efficiency, Water use efficiency, Yield, Yield components
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May 17, 2023
05/23
May 17, 2023
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Introduction Quinoa ( Chenopodium quinoa Willd) is a dicotyledonous plant that belongs to family Amaranthaceae and subfamily Chenopodiaceae, native to the Andes of the Americas. Due to the climatic diversity of Iran, one of the notable cases is the study of planting history as the most important factor in adapting and increasing plant yield; therefore, this study was conducted to determine the optimum sowing date of quinoa in Kavar (city of Fars province). In that experiment, the yield response...
Topics: Dry matter, Quinoa, Remobilization, WUE, Yield
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May 17, 2023
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May 17, 2023
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Introduction Potato plays an important role in global food security and it growth and tuber yield are influenced by many biotic and abiotic stresses, such as drought and low or high temperatures. Potato in Khuzestan province is facing unfavorable weather conditions, especially high temperature. Humic acid and amino acid, as well-known biostimulants, can directly or indirectly influence on plant growth and yield and significantly mitigates the injuries caused by abiotic stresses. In some...
Topics: Amini acid, Crop growth rate, Growth analysis, Humic acid, Relative growth rate
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May 17, 2023
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May 17, 2023
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Introduction Water deficit is one of the factors limiting the growth of plants in the world and is the most common environmental stress. Several studies show decreasing in growth, yield and plant death as a result of unfavorable water or water stress conditions. Management of nutrients consumption along with water consumption management influences the quantitative and qualitative yield of crops and medicinal plants. Although, chemical fertilizers provide plant nutrients for the plants faster...
Topics: Lamiaceae, Nutrients, RWC, Water requirements, Yield
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May 17, 2023
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May 17, 2023
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Introduction Medicinal plants in the world are very important and currently the demand for medicinal herbs is on the rise due to higher requirement of products need in the pharmaceutical, health and food industry. Therefore, the assessment of various systems of plant nutrition is one of the important needs of agricultural planning in order to achieve high yield with high quality, especially in medicinal plants. Manure increase soil fertility and improves the growth and yield. This experiment...
Topics: SPAD, Manure (Cow manure), Chlorophyll, Carotenoids
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May 17, 2023
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May 17, 2023
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Introduction Camelina [ Camelina sativa (L.) Crantz] oilseed is a low-input crop that grows and yields well in semiarid regions with low-fertility or saline soils in comparison with other crops. Camelina seeds contain 30–40 percent oil. Camelina is an annual plant from the Brassicaceae family that has short and fast growth. Camelina is well adapted to cool temperate and semi-arid climates, it is more tolerant of drought and spring freezing than rapeseed ( Brassica napus L.). Also, Resistance...
Topics: Harvest index, Leaf nitrogen, Oil crops, Oil percent, Protein percent
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May 17, 2023
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May 17, 2023
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Introduction Changes that occur during aging affect seed quality. Vigor is the first component of seed quality that decreases with aging seed, and followed by a decrease in germination capacity, seedling growth and establishment. The seeds of soybeans are classified in the orthodox seeds. These seeds contain high amount of lipid and protein. Seed viability can only be maintained until few months of storage under normal conditions. One of the important steps in soybean seed industry is...
Topics: Antioxidant, Deterioration, Priming, Rockweed
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May 17, 2023
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May 17, 2023
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Introduction: The Food and Drug Administration has classified pot marigold as a GRAS (generally recognized as safe) substance. Foliar nutrition acts as an effective tool for nutrient management in plants, and foliar nutrition can be used successfully to address wide spread nutrient deficiencies, especially in critical plant growth stages. Plants are able to absorb amino acids, amides and many nitrogen compounds through their roots or leaves. Also, plant symbiosis with mycorrhizal fungi causes...
Topics: Chlorophyll index, Mycorrhiza, Oil, Root colonization
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May 17, 2023
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May 17, 2023
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Introduction Lamiaceae is a large plant family with many important genus like Ziziphora . This genus has four species in Iran. Three species including Z. tenuior, Z. persica and Z. capitata are annual and Z. clinopodioides is Perennial. Ziziphora clinopodioides Lam. is an aromatic plant that leaves and flowers are frequently used as a traditional herbal medicines for the treatment of colds and cough. In Iran, this plant is mostly used in traditional medicine as a sedative, carminative,...
Topics: Lamiaceae family, Polegone, Seed, Yield
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May 17, 2023
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May 17, 2023
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Introduction Quinoa is a plant that has received worldwide attention due to its ability to grow in different stresses. The seed protein content of this plant is higher than seeds and its protein quality is better than seeds and legumes. It is rich in the amino acids lysine, globulin, which makes it suitable for patients with celiac disease. These issues have led the food and agriculture organization of the United Nations (FAO) to prioritize its development, especially in countries facing...
Topics: Deficit irrigation, Evaporation pan, Nutrition system, Organic fertilizer, Relative water content
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May 17, 2023
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May 17, 2023
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Introduction Wheat is globally one of the most critical cereals. It is necessary to increase its yield to cope with the increasing population through management improvement or breeding due to decreased arable lands. Soil moisture before planting and rainfall during the growing season are the two primary water supply sources for rainfed wheat production. However, the non-uniform distribution of rainfall during the growing season leads to drought, affecting crop water consumption and natural...
Topics: Chlorophyll, Nitrogen use efficiency, Protein percent, Remobilization, Water use efficiency
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May 17, 2023
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May 17, 2023
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Introduction Over the past few decades, agriculture has experienced rapid intensification in agricultural ecosystems. Although, this production pattern has significantly improved the yield of some crops, but has also led to an uncontrolled increase in the consumption of various chemical inputs. Agricultural activities are always dependent on natural resources and therefore have complex relationships with the environment. Evidence shows that the negative consequences of these activities, which...
Topics: Climate change, Indigenous knowledge, Global warming, Smallholder and traditional farming system
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May 17, 2023
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May 17, 2023
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Introduction Drought is the most important environmental stress that limit plant growth and crop production around the world. Long-term tension affects all metabolic processes of the plant and as a result, it often reduces plant production. On the other hand, potatoe is important for dry matter production and dietary intake and has been ranked as the fourth crop for volume of production after wheat, rice and corn. Due to water scarcity, population increase and necessity of more production of...
Topics: Cell membrane stability, Drip irrigation tape, Relative water content, Tuber yield
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May 17, 2023
05/23
May 17, 2023
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Introduction Potato ranks the first with respect to the amount of energy production per unit area. It is cultivated in about 19.5 million hectares throughout the world and its annual production is about 375 million tons. Iran ranks the third in Asia and 12th in the world in potato production and produces around 4.5 million tons of potato annually. Potato is a sensitive crop to water deficiency and its water requirement is higher compared to many other crops. Due to ever decreasing of water...
Topics: Drought stress, Satina, Savalan
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1.0
May 15, 2023
05/23
May 15, 2023
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Introduction Rapeseed ( Brassica napus L.) has a special rank among oilseeds due to its outstanding agronomic characteristics. Planting date is an important factor that affects grain yield, oil content and fatty acid composition. Delay in rapeseed planting reduces vegetative growth period and produces plants with less biomass, and reduces yield components and grain yield due to the exposure of the reproductive stage to high temperatures. Proper nutrition of the plant is one of the important...
Topics: Grain silica concentration, Grain yield, Grain zinc concentration, Oil percentage
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May 15, 2023
05/23
May 15, 2023
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Introduction Considering the conditions of Iran in terms of water resources, high consumption of nitrogen fertilizer and low consumption of potassium fertilizer, less water use in rice cultivation and balance in chemical fertilizer consumption will play very important role in saving and wasting water. Rice production should increase in the coming years due to population growth, and this is possible due to the use of improved cultivars and agricultural management. Water is the most important...
Topics: Crop management, Paddy field, Water use efficiency
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May 15, 2023
05/23
May 15, 2023
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Introduction It is well accepted that application of chemical fertilizers contaminates the water and soil resources and reduces the quality of agricultural and medicinal products, which subsequently creates serious environmental issues. Currently, to improve soil fertility and have sustainable production, bio-fertilizers as an alternative to the chemical fertilizers have been widely applied. Product quality and production sustainability are very important parameters for medicinal products. In...
Topics: Antioxidant activities, Competitive stress, Humic acid, Medicinal plant, Phenol
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May 15, 2023
05/23
May 15, 2023
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Introduction Potato is one of the most valuable food products. Indeed, no product has the capacity to produce energy per unit area compared with it. Potato has been an important part of the diet in most countries, especially in developing countries. Conventional cropping systems emphasize short-term goals such as high profitability and yield, and their maintenance costs are maximized due to the use of external inputs such as fertilizers and chemical pesticides, so with no use of external...
Topics: Ecological, High input, Medium input, Shannon-Wiener, Weeding
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May 15, 2023
05/23
May 15, 2023
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Introduction One vital area of research about medicinal plants is to study the different environmental conditions affecting the quality of these plants. Also in the research of medicinal plants, it is necessary to investigate and find the optimal conditions to produce the plants with the highest possible yield. Knowing the proper planting date of medicinal plants for each region can be effective in increasing the yield. Cultivation date is one of the main factors in determining the yield of...
Topics: Chlorophyll, Grain yield, Harvest index, Ion leakage, Phosphorous
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May 15, 2023
05/23
May 15, 2023
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Introduction Drought stress is one of the most important factors in reducing crop production in many arid and semi-arid regions of the world. In recent years, the use of growth stimulants to prevent the excessive use of chemical fertilizers and induce tolerance to environmental stresses has increased in order to achieve the goals of sustainable agriculture. Unlike chemical fertilizers, these compounds with the least adverse environmental effects are involved in increasing crop yields and...
Topics: Azotobacter, Grain yield, Humic acid, Seaweed extract
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May 15, 2023
05/23
May 15, 2023
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Introduction Potato ( Solanum tuberosum L.) is an annual and autotetraploid plant of the Solanaceae family that uses its underground tuber. In 2019, among West Asian countries, Turkey and Azerbaijan had a higher level of potato cultivation than Iran. Nitrogen consumption management in potato cultivation is one of the factors affecting the quantitative and qualitative characteristics of the tuber yield produced. Some researchers consider potato yield it consists of three components the number...
Topics: Tuber number, Nitrogen use efficiency, Marketable yield, Tuber weight
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May 15, 2023
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May 15, 2023
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Introduction Fenugreek ( Trigonella foenum-graecum ) is an annual plant belong to Fabaceae and is one of the traditional medicinal plants worldwide. It can provide seed and protein suitable for human's nutrition as well as animals. Water scarcity is a key threat in twenty-first century. On average, 40% of the world land surface are drylands, while this surface area is 90% in Iran. Supplying water requirement of Fenugreek through irrigation is an important factor affecting its growth and...
Topics: Cluster analysis, Medicinal plant, Stepwise regression, Water stress
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May 15, 2023
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May 15, 2023
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Introduction Among the various nutrients, nitrogen (N) is the limiting element for crop yield, which application of the optimum doses of this fertilizer in addition to increasing the yield components and grain yield in paddy fields, enhances the profits of rice cultivation in the region. One of the sustainable soil management techniques in paddy fields is the application of rice husk biochar. Biochar improves rice yield by improving soil chemical properties, increasing nutrient storage...
Topics: Grain yield, Nanofertilizer, Nitrogen concentration, Zinc concentration
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May 15, 2023
05/23
May 15, 2023
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Introduction Most areas under spring sugar beet cultivation face severe water restrictions and increasing the area under cultivation of this crop in most of these areas is contrary to the principle of conservation of water and soil resources. The use of new areas for winter sugar beet cultivation should be the area under cultivation of this crop in hot and dry areas. Therefore, winter sowing (pending) of sugar beet with emphasis on the limitations of the country's water resources has been...
Topics: Cluster analysis, Correlation, Factor analyze, White sugar yield
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May 15, 2023
05/23
May 15, 2023
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Introduction Saffron ( Crocus sativus L.) is a perennial plant of the Iridaceae family and is cultivated in Iran, Morocco, India, Greece, Italy, and Spain. Iran is considered the main producer of saffron, with the most optimum climate for saffron. Today, the dramatic increase in food production in the world requires high amounts of chemical fertilizers. However, some of the adverse effects of chemical fertilizer overuse in conventional farming practices have been well reported. In this regard,...
Topics: Broiler poultry manure, Cow manure, Ecological inputs, Medicinal plant, Number of flowers
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May 15, 2023
05/23
May 15, 2023
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Introduction Aging seed can be defined as loss of seed quality, viability and vigor. This process is irreversible over time and its intensity increases with increasing temperature and humidity. Aging seed is one of the major factors reducing quality and quantity in the agricultural sector, especially oilseeds. The use of antioxidants can reduce the damaging effects of aging. Ellagic acid is a natural plant antioxidant that can play a role in reducing the effects of stress on plants. This...
Topics: Antioxidant, Grain yield, Seedling emergence
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May 15, 2023
05/23
May 15, 2023
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Introduction Wheat is one of the most important cereals in the human diet and widely used in many processed nutrition products. Water deficit stress is a main limiting factor of wheat growth and productivity in the world. Major objective of plant breeding is improving grain yield under drought stress condition. In the breeding programs, selection based on multi-traits is an important approach to improve grain yield. This research was conducted out to evaluate the effect of phenological and...
Topics: Bread wheat, Discrimination function, Simultaneous selection, Water stress
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May 15, 2023
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May 15, 2023
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Introduction Direct seeding of rice is one of the most common farming methods in the world. Economic efficiency, faster and easier cultivation, reduction of growth period and earlier maturity (7-10 days), needing to less labour, higher water efficiency, more mechanization and reduction of rice vulnerability due to end-of-season drought are some benefit of direct rice cultivation; while, the most important problem in this planting system is weed control, and if weeds are controlled properly; the...
Topics: Direct cultivation, Grain yield, Herbicide, Mulch, Rice
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May 15, 2023
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May 15, 2023
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Introduction Due to climate change, increasing and maintaining the current level of production in low rainfall conditions in semi-arid regions is an important challenge. On the other hand, agriculture in these areas is often of low productivity due to low water use efficiency. Considering the fact that Iran is one of the challenging arid and semi-arid regions of the world, so it faces the problem of water shortage and precipitation. Therefore, in such circumstances, finding eco-friendly...
Topics: Drought, Ecofriendly inputs, Economical feasibility, Production stability, Seed oil
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May 15, 2023
05/23
May 15, 2023
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Introduction Mung bean ( Vigna radiata L.) is native to India and its seeds are rich in phosphorus and protein. Drought is one of the most important limiting agents of plant production. Carbohydrate metabolism and the process of dry matter distribution is disrupted by limitation of carbon stabilization due to stomata closure and reduction of photosynthesis under drought stress. Potassium is an essential nutrient and the most abundant cation that it has a major role in plant growth and almost...
Topics: Deficit irrigation, Dry matter digestibility, Insoluble fiber in neutral detergent, Seed yield
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May 14, 2023
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May 14, 2023
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Introduction Intensive agriculture, despite high production, has adverse environmental effects, mainly due to the use of pesticides and chemical fertilizers. Therefore, we need alternative agricultural systems that are more economically and environmentally sustainable to produce crops. One of the sustainable methods in the production of agricultural products is intercropping. Intercropping of two or more species in a plot of land can increase biodiversity and resource utilization as...
Topics: Grain yield, Monoculture, Number of spikes, Weed control
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May 14, 2023
05/23
May 14, 2023
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Introduction Water is now the main limiting factor for crop production in arid and semi-arid regions. Water-cut or irrigation interruption has been suggested as one of the main strategies agro-technique to get the most benefit from limited water resource available. In this regard, plant growth stage, time of stress induction and the genotype are the main key factors to determine the degree of success. Canola is one of the most important oil crop. It can survive some degree of water stress while...
Topics: Oil content, Reduction of grain yield, Spring rapeseed cultivars
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May 14, 2023
05/23
May 14, 2023
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Introduction Wheat ( Triticum aestivum L.) is one of the most important crops in the world as well as in Iran. It has experienced many improvements in terms of yield and quality traits during recent decades. Wheat, like energy, is known as a strategic commodity and is one of the important indicators of agriculture. This plant has the highest area under cultivation and production among other cereals in the world. Planting date is an important factor in crop production because meteorological...
Topics: Grain yield, Growth-degree day, Phenological stage, Planting date, Yield components
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May 14, 2023
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May 14, 2023
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Introduction Grasspea ( Lathyrus sativus L . ) is one of the most important forage crops in the world. It contains 12 to 20% protein. Silicon (Si) existing in the Earth’s crust is classified as the most abundant element after oxygen. Although silicon is not considered an essential element for plant growth, but a number of studies have reported that it as an important factor in plants that plays an important role in the resistance mechanisms of plants against environmental stress. Also, it...
Topics: Active nodules, Azospirillium, Pseudomonas, Quantum yield, Relative water content
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May 14, 2023
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May 14, 2023
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Introduction During the 1950s and 1960s, the green revolution led to a dramatic increase in global food and fodder production to eliminate hunger and boost food security. This production enhancement was accompanied by an intensified agricultural and chemical input consumption and increased cultivated area and mechanization. Although yield per unit area has improved in most crops, concerns about food security for the world's rising population are still significant. Guaranteeing food security in...
Topics: Data analysis, intake efficiency, regional yield factor, stability
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May 14, 2023
05/23
May 14, 2023
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Introduction There is an urgent need to increase per capita food production to compete with high population growth while maintaining environmental sustainability. Because nitrogen plays a vital role in food production for humans and livestock, nitrogen management is essential in food production. In most cropping systems, nitrogen management seems to be a major challenge due to its high mobility and natural tendency for losses from the soil-plant system to the environment. Soil organic carbon...
Topics: Cover crop, Nitrogen harvest index, Nitrogen use efficiency, Organic carbon
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May 14, 2023
05/23
May 14, 2023
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Introduction Sugar beet ( Beta vulgaris L.) is the second most important sugar crop after sugarcane, which annually produces about 40% of total sugar production worldwide and is adapted to different climatic conditions (El-Hag et al ., 2015). Due to global warming, autumn cultivation of sugar beet is predicted to become more priority in the future, but autumn cultivation is in danger of bolting and flowering in many areas. Excessive bolting reduces sugar content, root yield, and purity of raw...
Topics: Bolting, Extraction coefficient, LAI, Sugar content
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May 14, 2023
05/23
May 14, 2023
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Introduction Maize ( Zea mays L.) is one of the most important cereals after wheat and rice in the tropical and temperate regions of the world. Also, its mean production is 8 ton ha -1 . Moreover, the total area of under cultivation is 132572 hectares in Iran. Crop simulation models can play an important role in improving agricultural production systems in many developing countries. Crop models can simulate plant growth processes and grain yield instead of conducting several years of field...
Topics: Biomass, Evaluation, Flowering, Grain yield
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May 13, 2023
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May 13, 2023
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Introduction The quantity and quality of forage plants are beneficial and useful due to their role in animal husbandry, reproduction and other livestock products. Due to the limitation of water resources, water-deficit as a significant biotic stress is the most severe threat to world food security and is responsible for many yield losses. Plants constantly modify their physiological processes in response to various biotic and abiotic stress to regulate the balance between plant growth and...
Topics: Auxin, Chorophyll, Crude protein, Cyanidric acid, Dry matter digestibility
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May 13, 2023
05/23
May 13, 2023
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Introduction Intercropping is an ecological crop management method in which at least two plant species grow simultaneously on a field. Increased land productivity in intercropping of cereals and legumes is mainly due to the positive interaction between cereals and legumes in the rhizosphere, which increases the efficiency of soil resource utilization, especially nitrogen (N). Mixed cultivation of legumes with cereals provides higher land use efficiency, lower water consumption, and greater...
Topics: Land equivalent, Monoculture, Nanofertilizer, Planting arrangements, Sustainable agriculture
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May 13, 2023
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May 13, 2023
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Introduction The most important problem that threatens food security of any country and the world is the lack of adequate water resources, so one of the ways to deal with this crisis is to use plants with low water requirements and high water use efficiency. Among the plants, we can name Quinoa, which is one of the plants that has been less studied and exploited in Iran. Since the planting date has the greatest impact on the physiological characteristics of the crop compared to other cropping...
Topics: Azospirillum, Azotobacter, Drought stress, Irrigation management
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May 13, 2023
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May 13, 2023
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Introduction Drought stress and consequent lack of available water for plants is one of the main causes of accumulation of reactive oxygen species (ROS) in various organs of plants, which is effective in reducing the yield of cereals such as wheat. The antioxidant system, which contains various enzymes and genes, is responsible for removing and detoxifying plants from ROS. Unfortunately, genes responding to drought stress and their enzymatic activities associated with spike and flag leaf of...
Topics: Enzyme activity, Flag leaf, Gene expression, Photosynthetic mechanism, Spike
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May 13, 2023
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May 13, 2023
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Introduction Climate change is rapidly degrading the conditions of crop production. For instance, increasing salinization and aridity is forecasted to increase in most parts of the world. As a consequence, new stress-tolerant species and genotypes must be identified and used for future agriculture. Stress-tolerant species exist but are actually underutilized and neglected. Quinoa, scientifically known as Chenopodium quinoa Willd. is a member of the Amaranthaceae family. Promoting the...
Topics: FST, Growing degree days, Sowing date
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May 13, 2023
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May 13, 2023
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Introduction Quinoa is a dicotyledonous plant from the Amaranthaceae family, with favorable nutritional value and a high potential for growth and production in adverse environmental conditions. Despite being three carbon, it has high water consumption efficiency and as a new crop, due to its wide adaptation to different environment conditions such as salinity and drought, as well as being premature, it is suitable for planting in arid and desert areas and has many factors. Genetic and...
Topics: Drought stress, Optimal density, Seed protein, Stomatal conductance, Water use efficiency
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May 13, 2023
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May 13, 2023
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Introduction The increasing demand for medicinal plants in traditional medicine as well as the pharmaceutical industry has created the need for some plants to be grown commercially, but the lack of soil moisture poses a serious threat to their production. Planting method can affect the emergence and growth rate of crop and lead to decrease water consumption and increase irrigation water efficiency as yield increases. Roselle ( Hibiscus sabdariffa L.) is one of the drought tolerant plants....
Topics: Carotenoid, Drought stress, Leaf relative water content, Transplanting
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May 10, 2023
05/23
May 10, 2023
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Introduction Cumin is one of the most important medicinal plants in Iran and is widely used in food, health and beauty industries due to its antioxidant and antibacterial properties. Yield of some crops are higher in autumn planting compared to spring. However, low temperature and inappropriate distribution of precipitation are of factors affecting seedling emergence and establishment. So it seems that seeds with higher germination also have better emergence and establishment producing more...
Topics: Autumn planting, Cold, Plumule, Radicle
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